Heads up: systemd-timesyncd on Raspberian lite

[Hal Murray]

I was setting up ntpsec on a Raspberry Pi.  Things got confused.  It looked 
like another instance of the drift stuck at 500 ppm bug, issue 44
  https://gitlab.com/NTPsec/ntpsec/issues/44
but things got even more confused when I tried to gather more info.

I finally figured out that systemd-timesyncd was also running and messing 
with the clock.  It's all downhill from there.

Raspberian-lite doesn't come with ntp.  I haven't figured out how/what 
timesyncd actually does.  It may coexist with ntp if you install ntp from the 
distro.  There is a man page, but I didn't see anything interesting.  If 
anybody knows what it does, please clue me/us in.


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